We start by factoring the quadratic expression 2z2−17z+35
step 2
We look for two numbers that multiply to 2⋅35=70 and add up to −17. These numbers are −7 and −10
step 3
Rewrite the middle term using these numbers: 2z2−7z−10z+35
step 4
Factor by grouping: z(2z−7)−5(2z−7)
step 5
Factor out the common term: (2z−7)(z−5)
Answer
(2z−7)(z−5)
Key Concept
Factoring Quadratics
Explanation
To factor a quadratic expression, we look for two numbers that multiply to the product of the leading coefficient and the constant term, and add up to the middle coefficient. We then use these numbers to split the middle term and factor by grouping.
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